10-Piece Set Brass Double Ring, 10mm Diameter, Key Holder This is a set of 10 brass double rings (split rings) with a diameter of approximately 10mm. The material is solid brass, and the more you use it, the more it will develop a渋い (shibui - tasteful, subdued) gold color and a unique patina, so please enjoy the aging process. Use them to connect keys, carabiner key rings, wallet chains, and key holders, or for customization. Small double rings can widen and not return to their original shape if you put thick or large items through them, so please purchase double rings that are the appropriate size for what you intend to put through them. Shipped in simple packaging. A box is not included. Due to the nature of brass, there may be scratches, blackening, and dullness, so please understand this before purchasing. While we have photographed the actual product, the color may vary depending on your monitor and screen brightness. Shipped via regular mail (mini-letter). Please understand that tracking and compensation are not included. For those who prefer anonymous shipping with a tracking number and compensation, you can upgrade to Yu-Yu Mercari Mail Yu-Packet Post Mini for an additional 120 yen. Please comment if you would like to do so.